Finding the Fourth Proportional to 99,895.83, 137,858.92 and 54,575.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,895.83 : 137,858.92 = 54,575.72 : x
2. Step 2: Convert to fraction form
   99,895.83/137,858.92 = 54,575.72/x
3. Step 3: Cross multiply
   99,895.83x = 137,858.92 × 54,575.72
4. Step 4: Simplify right side
   99,895.83x = 7,523,749,817.42
5. Step 5: Solve for x
   x = 7,523,749,817.42/99,895.83
6. Step 6: Final answer
   x = 75,315.96